1)корень x=4 2)корень y=0,4​

1. (The warmer) the weather was, (the better) l felt 2. Her illness was (much more  serious) than we had expected. 3. It's (easier) to learn a foreign language when you have an opportunity to communicate with native speakers. 4. Milk is (twice as expensive as) it was several years ago. 5. They got (more) money for that project than we did. 6. She is my (elder) sister. She is two years (older) than me. 7. The film we saw yesterday was (more exciting) than the book. 8. It's a well-known fact that the giraffe is (taller) than the man. 9. The information you've sent me today is (more useful) than the one you sent me yesterday. 10. - I can't find Bob. Where is he? - He is sitting in ( the farthest) corner of the yard. 11. This machine is (the most reliable) of all. 12. Unfortunately the results of the experiment are (worse) than they were last year.

1.Has he come?
Yes,he has.
He came an hour ago.
2.Have you read the book?
Yes,I have read the book .
I read it two days ago .
3. Has she translated the text?
Yes, she has translated the text.
She translated it ten minutes ago.
4. Have they met the teacher?
Yes, they have met the teacher.
They met him five minutes ago.
5.Has he built a bridge?
Yes, he has built a bridge.
He built it ten minutes ago.
6.Have they had lunch?
They have had lunch.
They had lunch ten minutes ago.
7.Has a taxi come?
Yes, it has.
It came a minute ago.
8.Has he seen Red Square?
Yes, he has seen it.
He saw it two days ago.
9.Has the lesson begun?
Yes,the lesson has begun.
It began five minutes ago.
10. Has it drunk the milk?
Yes,it has drunk the milk.
It drank the milk two minutes ago.